Is there a way to connect two STM32 through Ethernet (using a hub or multiplexer?)

[Luis Ber]

Hello,

I'm doing a project where two microcontrollers (maybe one STM32H7 and STM32F7) must be connected between them. These two microcontrollers should be connected to an external Ethernet port.

Is there some type of hub or multiplexer that allows this type of connection? In the following lines I attach a image where I show the connection diagram:

Thank you in advance!

[Tesla DeLorean]

There are certainly ethernet switch/hub devices that would achieve that either directly as a PHY, or through a PHY+Magnetics.

Not really my use case, you'd need to do your own research, due-diligence and prototyping here to determine the viability and code the drivers.

Would imagine chips by the like of Micrel and Realtek fit the bill.